Yuki Onozaki, who was studying at a Women's College in Tokyo, was originally a young and ignorant girl, but her life changed completely in the summer of a certain year. During the summer vacation, Yuki returned to her hometown of Kyoto, only to be raped by the lover of her mother. Yuki then abandoned her studies and chose a depraved life. She met the gang leader Kiyoshi Oba and factory industrialists. Although these men could give her more or less physical comfort, they could not open Yuki's locked heart. It was not until the appearance of the young architect Yoichiro Honma that Yuki's love flower gradually bloomed. Soon, Yoichiro's first love while studying in France, Sandra, finds her, which makes Yuki's heart surge. After several twists and turns, Yoichiro decided to marry Yuki, but the trials never stopped...